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7b8e19b6 | 1 | /* |
2 | * AT86RF230/RF231 driver | |
3 | * | |
4 | * Copyright (C) 2009-2012 Siemens AG | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
7b8e19b6 | 15 | * Written by: |
16 | * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | |
17 | * Alexander Smirnov <alex.bluesman.smirnov@gmail.com> | |
01ebd60b | 18 | * Alexander Aring <aar@pengutronix.de> |
7b8e19b6 | 19 | */ |
20 | #include <linux/kernel.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/interrupt.h> | |
4af619ae | 23 | #include <linux/irq.h> |
7b8e19b6 | 24 | #include <linux/gpio.h> |
25 | #include <linux/delay.h> | |
7b8e19b6 | 26 | #include <linux/spinlock.h> |
27 | #include <linux/spi/spi.h> | |
28 | #include <linux/spi/at86rf230.h> | |
f76014f7 | 29 | #include <linux/regmap.h> |
7b8e19b6 | 30 | #include <linux/skbuff.h> |
fa2d3e94 | 31 | #include <linux/of_gpio.h> |
4ca24aca | 32 | #include <linux/ieee802154.h> |
7b8e19b6 | 33 | |
34 | #include <net/mac802154.h> | |
5ad60d36 | 35 | #include <net/cfg802154.h> |
7b8e19b6 | 36 | |
a53d1f7c AA |
37 | struct at86rf230_local; |
38 | /* at86rf2xx chip depend data. | |
39 | * All timings are in us. | |
40 | */ | |
41 | struct at86rf2xx_chip_data { | |
7a4ef918 | 42 | u16 t_sleep_cycle; |
984e0c68 | 43 | u16 t_channel_switch; |
09e536cd | 44 | u16 t_reset_to_off; |
2e0571c0 AA |
45 | u16 t_off_to_aack; |
46 | u16 t_off_to_tx_on; | |
1d15d6b5 AA |
47 | u16 t_frame; |
48 | u16 t_p_ack; | |
49 | /* short interframe spacing time */ | |
50 | u16 t_sifs; | |
51 | /* long interframe spacing time */ | |
52 | u16 t_lifs; | |
53 | /* completion timeout for tx in msecs */ | |
54 | u16 t_tx_timeout; | |
a53d1f7c AA |
55 | int rssi_base_val; |
56 | ||
e37d2ec8 | 57 | int (*set_channel)(struct at86rf230_local *, u8, u8); |
a7d7eda9 | 58 | int (*get_desense_steps)(struct at86rf230_local *, s32); |
a53d1f7c AA |
59 | }; |
60 | ||
1d15d6b5 | 61 | #define AT86RF2XX_MAX_BUF (127 + 3) |
7b8e19b6 | 62 | |
1d15d6b5 AA |
63 | struct at86rf230_state_change { |
64 | struct at86rf230_local *lp; | |
7b8e19b6 | 65 | |
1d15d6b5 AA |
66 | struct spi_message msg; |
67 | struct spi_transfer trx; | |
68 | u8 buf[AT86RF2XX_MAX_BUF]; | |
69 | ||
70 | void (*complete)(void *context); | |
71 | u8 from_state; | |
72 | u8 to_state; | |
97fed795 AA |
73 | |
74 | bool irq_enable; | |
1d15d6b5 AA |
75 | }; |
76 | ||
77 | struct at86rf230_local { | |
78 | struct spi_device *spi; | |
7b8e19b6 | 79 | |
5a504397 | 80 | struct ieee802154_hw *hw; |
1d15d6b5 | 81 | struct at86rf2xx_chip_data *data; |
f76014f7 | 82 | struct regmap *regmap; |
7b8e19b6 | 83 | |
2e0571c0 AA |
84 | struct completion state_complete; |
85 | struct at86rf230_state_change state; | |
86 | ||
1d15d6b5 | 87 | struct at86rf230_state_change irq; |
6ca00197 | 88 | |
a53d1f7c | 89 | bool tx_aret; |
850f43ac | 90 | s8 max_frame_retries; |
1d15d6b5 AA |
91 | bool is_tx; |
92 | /* spinlock for is_tx protection */ | |
93 | spinlock_t lock; | |
1d15d6b5 AA |
94 | struct sk_buff *tx_skb; |
95 | struct at86rf230_state_change tx; | |
7b8e19b6 | 96 | }; |
97 | ||
98 | #define RG_TRX_STATUS (0x01) | |
99 | #define SR_TRX_STATUS 0x01, 0x1f, 0 | |
100 | #define SR_RESERVED_01_3 0x01, 0x20, 5 | |
101 | #define SR_CCA_STATUS 0x01, 0x40, 6 | |
102 | #define SR_CCA_DONE 0x01, 0x80, 7 | |
103 | #define RG_TRX_STATE (0x02) | |
104 | #define SR_TRX_CMD 0x02, 0x1f, 0 | |
105 | #define SR_TRAC_STATUS 0x02, 0xe0, 5 | |
106 | #define RG_TRX_CTRL_0 (0x03) | |
107 | #define SR_CLKM_CTRL 0x03, 0x07, 0 | |
108 | #define SR_CLKM_SHA_SEL 0x03, 0x08, 3 | |
109 | #define SR_PAD_IO_CLKM 0x03, 0x30, 4 | |
110 | #define SR_PAD_IO 0x03, 0xc0, 6 | |
111 | #define RG_TRX_CTRL_1 (0x04) | |
112 | #define SR_IRQ_POLARITY 0x04, 0x01, 0 | |
113 | #define SR_IRQ_MASK_MODE 0x04, 0x02, 1 | |
114 | #define SR_SPI_CMD_MODE 0x04, 0x0c, 2 | |
115 | #define SR_RX_BL_CTRL 0x04, 0x10, 4 | |
116 | #define SR_TX_AUTO_CRC_ON 0x04, 0x20, 5 | |
117 | #define SR_IRQ_2_EXT_EN 0x04, 0x40, 6 | |
118 | #define SR_PA_EXT_EN 0x04, 0x80, 7 | |
119 | #define RG_PHY_TX_PWR (0x05) | |
120 | #define SR_TX_PWR 0x05, 0x0f, 0 | |
121 | #define SR_PA_LT 0x05, 0x30, 4 | |
122 | #define SR_PA_BUF_LT 0x05, 0xc0, 6 | |
123 | #define RG_PHY_RSSI (0x06) | |
124 | #define SR_RSSI 0x06, 0x1f, 0 | |
125 | #define SR_RND_VALUE 0x06, 0x60, 5 | |
126 | #define SR_RX_CRC_VALID 0x06, 0x80, 7 | |
127 | #define RG_PHY_ED_LEVEL (0x07) | |
128 | #define SR_ED_LEVEL 0x07, 0xff, 0 | |
129 | #define RG_PHY_CC_CCA (0x08) | |
130 | #define SR_CHANNEL 0x08, 0x1f, 0 | |
131 | #define SR_CCA_MODE 0x08, 0x60, 5 | |
132 | #define SR_CCA_REQUEST 0x08, 0x80, 7 | |
133 | #define RG_CCA_THRES (0x09) | |
134 | #define SR_CCA_ED_THRES 0x09, 0x0f, 0 | |
135 | #define SR_RESERVED_09_1 0x09, 0xf0, 4 | |
136 | #define RG_RX_CTRL (0x0a) | |
137 | #define SR_PDT_THRES 0x0a, 0x0f, 0 | |
138 | #define SR_RESERVED_0a_1 0x0a, 0xf0, 4 | |
139 | #define RG_SFD_VALUE (0x0b) | |
140 | #define SR_SFD_VALUE 0x0b, 0xff, 0 | |
141 | #define RG_TRX_CTRL_2 (0x0c) | |
142 | #define SR_OQPSK_DATA_RATE 0x0c, 0x03, 0 | |
8fad346f PB |
143 | #define SR_SUB_MODE 0x0c, 0x04, 2 |
144 | #define SR_BPSK_QPSK 0x0c, 0x08, 3 | |
643e53c2 PB |
145 | #define SR_OQPSK_SUB1_RC_EN 0x0c, 0x10, 4 |
146 | #define SR_RESERVED_0c_5 0x0c, 0x60, 5 | |
7b8e19b6 | 147 | #define SR_RX_SAFE_MODE 0x0c, 0x80, 7 |
148 | #define RG_ANT_DIV (0x0d) | |
149 | #define SR_ANT_CTRL 0x0d, 0x03, 0 | |
150 | #define SR_ANT_EXT_SW_EN 0x0d, 0x04, 2 | |
151 | #define SR_ANT_DIV_EN 0x0d, 0x08, 3 | |
152 | #define SR_RESERVED_0d_2 0x0d, 0x70, 4 | |
153 | #define SR_ANT_SEL 0x0d, 0x80, 7 | |
154 | #define RG_IRQ_MASK (0x0e) | |
155 | #define SR_IRQ_MASK 0x0e, 0xff, 0 | |
156 | #define RG_IRQ_STATUS (0x0f) | |
157 | #define SR_IRQ_0_PLL_LOCK 0x0f, 0x01, 0 | |
158 | #define SR_IRQ_1_PLL_UNLOCK 0x0f, 0x02, 1 | |
159 | #define SR_IRQ_2_RX_START 0x0f, 0x04, 2 | |
160 | #define SR_IRQ_3_TRX_END 0x0f, 0x08, 3 | |
161 | #define SR_IRQ_4_CCA_ED_DONE 0x0f, 0x10, 4 | |
162 | #define SR_IRQ_5_AMI 0x0f, 0x20, 5 | |
163 | #define SR_IRQ_6_TRX_UR 0x0f, 0x40, 6 | |
164 | #define SR_IRQ_7_BAT_LOW 0x0f, 0x80, 7 | |
165 | #define RG_VREG_CTRL (0x10) | |
166 | #define SR_RESERVED_10_6 0x10, 0x03, 0 | |
167 | #define SR_DVDD_OK 0x10, 0x04, 2 | |
168 | #define SR_DVREG_EXT 0x10, 0x08, 3 | |
169 | #define SR_RESERVED_10_3 0x10, 0x30, 4 | |
170 | #define SR_AVDD_OK 0x10, 0x40, 6 | |
171 | #define SR_AVREG_EXT 0x10, 0x80, 7 | |
172 | #define RG_BATMON (0x11) | |
173 | #define SR_BATMON_VTH 0x11, 0x0f, 0 | |
174 | #define SR_BATMON_HR 0x11, 0x10, 4 | |
175 | #define SR_BATMON_OK 0x11, 0x20, 5 | |
176 | #define SR_RESERVED_11_1 0x11, 0xc0, 6 | |
177 | #define RG_XOSC_CTRL (0x12) | |
178 | #define SR_XTAL_TRIM 0x12, 0x0f, 0 | |
179 | #define SR_XTAL_MODE 0x12, 0xf0, 4 | |
180 | #define RG_RX_SYN (0x15) | |
181 | #define SR_RX_PDT_LEVEL 0x15, 0x0f, 0 | |
182 | #define SR_RESERVED_15_2 0x15, 0x70, 4 | |
183 | #define SR_RX_PDT_DIS 0x15, 0x80, 7 | |
184 | #define RG_XAH_CTRL_1 (0x17) | |
185 | #define SR_RESERVED_17_8 0x17, 0x01, 0 | |
186 | #define SR_AACK_PROM_MODE 0x17, 0x02, 1 | |
187 | #define SR_AACK_ACK_TIME 0x17, 0x04, 2 | |
188 | #define SR_RESERVED_17_5 0x17, 0x08, 3 | |
189 | #define SR_AACK_UPLD_RES_FT 0x17, 0x10, 4 | |
190 | #define SR_AACK_FLTR_RES_FT 0x17, 0x20, 5 | |
84dda3c6 | 191 | #define SR_CSMA_LBT_MODE 0x17, 0x40, 6 |
7b8e19b6 | 192 | #define SR_RESERVED_17_1 0x17, 0x80, 7 |
193 | #define RG_FTN_CTRL (0x18) | |
194 | #define SR_RESERVED_18_2 0x18, 0x7f, 0 | |
195 | #define SR_FTN_START 0x18, 0x80, 7 | |
196 | #define RG_PLL_CF (0x1a) | |
197 | #define SR_RESERVED_1a_2 0x1a, 0x7f, 0 | |
198 | #define SR_PLL_CF_START 0x1a, 0x80, 7 | |
199 | #define RG_PLL_DCU (0x1b) | |
200 | #define SR_RESERVED_1b_3 0x1b, 0x3f, 0 | |
201 | #define SR_RESERVED_1b_2 0x1b, 0x40, 6 | |
202 | #define SR_PLL_DCU_START 0x1b, 0x80, 7 | |
203 | #define RG_PART_NUM (0x1c) | |
204 | #define SR_PART_NUM 0x1c, 0xff, 0 | |
205 | #define RG_VERSION_NUM (0x1d) | |
206 | #define SR_VERSION_NUM 0x1d, 0xff, 0 | |
207 | #define RG_MAN_ID_0 (0x1e) | |
208 | #define SR_MAN_ID_0 0x1e, 0xff, 0 | |
209 | #define RG_MAN_ID_1 (0x1f) | |
210 | #define SR_MAN_ID_1 0x1f, 0xff, 0 | |
211 | #define RG_SHORT_ADDR_0 (0x20) | |
212 | #define SR_SHORT_ADDR_0 0x20, 0xff, 0 | |
213 | #define RG_SHORT_ADDR_1 (0x21) | |
214 | #define SR_SHORT_ADDR_1 0x21, 0xff, 0 | |
215 | #define RG_PAN_ID_0 (0x22) | |
216 | #define SR_PAN_ID_0 0x22, 0xff, 0 | |
217 | #define RG_PAN_ID_1 (0x23) | |
218 | #define SR_PAN_ID_1 0x23, 0xff, 0 | |
219 | #define RG_IEEE_ADDR_0 (0x24) | |
220 | #define SR_IEEE_ADDR_0 0x24, 0xff, 0 | |
221 | #define RG_IEEE_ADDR_1 (0x25) | |
222 | #define SR_IEEE_ADDR_1 0x25, 0xff, 0 | |
223 | #define RG_IEEE_ADDR_2 (0x26) | |
224 | #define SR_IEEE_ADDR_2 0x26, 0xff, 0 | |
225 | #define RG_IEEE_ADDR_3 (0x27) | |
226 | #define SR_IEEE_ADDR_3 0x27, 0xff, 0 | |
227 | #define RG_IEEE_ADDR_4 (0x28) | |
228 | #define SR_IEEE_ADDR_4 0x28, 0xff, 0 | |
229 | #define RG_IEEE_ADDR_5 (0x29) | |
230 | #define SR_IEEE_ADDR_5 0x29, 0xff, 0 | |
231 | #define RG_IEEE_ADDR_6 (0x2a) | |
232 | #define SR_IEEE_ADDR_6 0x2a, 0xff, 0 | |
233 | #define RG_IEEE_ADDR_7 (0x2b) | |
234 | #define SR_IEEE_ADDR_7 0x2b, 0xff, 0 | |
235 | #define RG_XAH_CTRL_0 (0x2c) | |
236 | #define SR_SLOTTED_OPERATION 0x2c, 0x01, 0 | |
237 | #define SR_MAX_CSMA_RETRIES 0x2c, 0x0e, 1 | |
238 | #define SR_MAX_FRAME_RETRIES 0x2c, 0xf0, 4 | |
239 | #define RG_CSMA_SEED_0 (0x2d) | |
240 | #define SR_CSMA_SEED_0 0x2d, 0xff, 0 | |
241 | #define RG_CSMA_SEED_1 (0x2e) | |
242 | #define SR_CSMA_SEED_1 0x2e, 0x07, 0 | |
243 | #define SR_AACK_I_AM_COORD 0x2e, 0x08, 3 | |
244 | #define SR_AACK_DIS_ACK 0x2e, 0x10, 4 | |
245 | #define SR_AACK_SET_PD 0x2e, 0x20, 5 | |
246 | #define SR_AACK_FVN_MODE 0x2e, 0xc0, 6 | |
247 | #define RG_CSMA_BE (0x2f) | |
248 | #define SR_MIN_BE 0x2f, 0x0f, 0 | |
249 | #define SR_MAX_BE 0x2f, 0xf0, 4 | |
250 | ||
251 | #define CMD_REG 0x80 | |
252 | #define CMD_REG_MASK 0x3f | |
253 | #define CMD_WRITE 0x40 | |
254 | #define CMD_FB 0x20 | |
255 | ||
256 | #define IRQ_BAT_LOW (1 << 7) | |
257 | #define IRQ_TRX_UR (1 << 6) | |
258 | #define IRQ_AMI (1 << 5) | |
259 | #define IRQ_CCA_ED (1 << 4) | |
260 | #define IRQ_TRX_END (1 << 3) | |
261 | #define IRQ_RX_START (1 << 2) | |
262 | #define IRQ_PLL_UNL (1 << 1) | |
263 | #define IRQ_PLL_LOCK (1 << 0) | |
264 | ||
43b5abe0 SH |
265 | #define IRQ_ACTIVE_HIGH 0 |
266 | #define IRQ_ACTIVE_LOW 1 | |
267 | ||
7b8e19b6 | 268 | #define STATE_P_ON 0x00 /* BUSY */ |
269 | #define STATE_BUSY_RX 0x01 | |
270 | #define STATE_BUSY_TX 0x02 | |
271 | #define STATE_FORCE_TRX_OFF 0x03 | |
272 | #define STATE_FORCE_TX_ON 0x04 /* IDLE */ | |
273 | /* 0x05 */ /* INVALID_PARAMETER */ | |
274 | #define STATE_RX_ON 0x06 | |
275 | /* 0x07 */ /* SUCCESS */ | |
276 | #define STATE_TRX_OFF 0x08 | |
277 | #define STATE_TX_ON 0x09 | |
278 | /* 0x0a - 0x0e */ /* 0x0a - UNSUPPORTED_ATTRIBUTE */ | |
279 | #define STATE_SLEEP 0x0F | |
48d5dbaf | 280 | #define STATE_PREP_DEEP_SLEEP 0x10 |
7b8e19b6 | 281 | #define STATE_BUSY_RX_AACK 0x11 |
282 | #define STATE_BUSY_TX_ARET 0x12 | |
028889b0 | 283 | #define STATE_RX_AACK_ON 0x16 |
284 | #define STATE_TX_ARET_ON 0x19 | |
7b8e19b6 | 285 | #define STATE_RX_ON_NOCLK 0x1C |
286 | #define STATE_RX_AACK_ON_NOCLK 0x1D | |
287 | #define STATE_BUSY_RX_AACK_NOCLK 0x1E | |
288 | #define STATE_TRANSITION_IN_PROGRESS 0x1F | |
289 | ||
f76014f7 AA |
290 | #define AT86RF2XX_NUMREGS 0x3F |
291 | ||
97fed795 | 292 | static void |
1d15d6b5 AA |
293 | at86rf230_async_state_change(struct at86rf230_local *lp, |
294 | struct at86rf230_state_change *ctx, | |
97fed795 AA |
295 | const u8 state, void (*complete)(void *context), |
296 | const bool irq_enable); | |
1d15d6b5 | 297 | |
f76014f7 AA |
298 | static inline int |
299 | __at86rf230_write(struct at86rf230_local *lp, | |
300 | unsigned int addr, unsigned int data) | |
301 | { | |
302 | return regmap_write(lp->regmap, addr, data); | |
303 | } | |
304 | ||
305 | static inline int | |
306 | __at86rf230_read(struct at86rf230_local *lp, | |
307 | unsigned int addr, unsigned int *data) | |
308 | { | |
309 | return regmap_read(lp->regmap, addr, data); | |
310 | } | |
311 | ||
312 | static inline int | |
313 | at86rf230_read_subreg(struct at86rf230_local *lp, | |
314 | unsigned int addr, unsigned int mask, | |
315 | unsigned int shift, unsigned int *data) | |
316 | { | |
317 | int rc; | |
318 | ||
319 | rc = __at86rf230_read(lp, addr, data); | |
320 | if (rc > 0) | |
321 | *data = (*data & mask) >> shift; | |
322 | ||
323 | return rc; | |
324 | } | |
325 | ||
326 | static inline int | |
327 | at86rf230_write_subreg(struct at86rf230_local *lp, | |
328 | unsigned int addr, unsigned int mask, | |
329 | unsigned int shift, unsigned int data) | |
330 | { | |
331 | return regmap_update_bits(lp->regmap, addr, mask, data << shift); | |
332 | } | |
333 | ||
334 | static bool | |
335 | at86rf230_reg_writeable(struct device *dev, unsigned int reg) | |
336 | { | |
337 | switch (reg) { | |
338 | case RG_TRX_STATE: | |
339 | case RG_TRX_CTRL_0: | |
340 | case RG_TRX_CTRL_1: | |
341 | case RG_PHY_TX_PWR: | |
342 | case RG_PHY_ED_LEVEL: | |
343 | case RG_PHY_CC_CCA: | |
344 | case RG_CCA_THRES: | |
345 | case RG_RX_CTRL: | |
346 | case RG_SFD_VALUE: | |
347 | case RG_TRX_CTRL_2: | |
348 | case RG_ANT_DIV: | |
349 | case RG_IRQ_MASK: | |
350 | case RG_VREG_CTRL: | |
351 | case RG_BATMON: | |
352 | case RG_XOSC_CTRL: | |
353 | case RG_RX_SYN: | |
354 | case RG_XAH_CTRL_1: | |
355 | case RG_FTN_CTRL: | |
356 | case RG_PLL_CF: | |
357 | case RG_PLL_DCU: | |
358 | case RG_SHORT_ADDR_0: | |
359 | case RG_SHORT_ADDR_1: | |
360 | case RG_PAN_ID_0: | |
361 | case RG_PAN_ID_1: | |
362 | case RG_IEEE_ADDR_0: | |
363 | case RG_IEEE_ADDR_1: | |
364 | case RG_IEEE_ADDR_2: | |
365 | case RG_IEEE_ADDR_3: | |
366 | case RG_IEEE_ADDR_4: | |
367 | case RG_IEEE_ADDR_5: | |
368 | case RG_IEEE_ADDR_6: | |
369 | case RG_IEEE_ADDR_7: | |
370 | case RG_XAH_CTRL_0: | |
371 | case RG_CSMA_SEED_0: | |
372 | case RG_CSMA_SEED_1: | |
373 | case RG_CSMA_BE: | |
374 | return true; | |
375 | default: | |
376 | return false; | |
377 | } | |
378 | } | |
379 | ||
380 | static bool | |
381 | at86rf230_reg_readable(struct device *dev, unsigned int reg) | |
382 | { | |
383 | bool rc; | |
384 | ||
385 | /* all writeable are also readable */ | |
386 | rc = at86rf230_reg_writeable(dev, reg); | |
387 | if (rc) | |
388 | return rc; | |
389 | ||
390 | /* readonly regs */ | |
391 | switch (reg) { | |
392 | case RG_TRX_STATUS: | |
393 | case RG_PHY_RSSI: | |
394 | case RG_IRQ_STATUS: | |
395 | case RG_PART_NUM: | |
396 | case RG_VERSION_NUM: | |
397 | case RG_MAN_ID_1: | |
398 | case RG_MAN_ID_0: | |
399 | return true; | |
400 | default: | |
401 | return false; | |
402 | } | |
403 | } | |
404 | ||
405 | static bool | |
406 | at86rf230_reg_volatile(struct device *dev, unsigned int reg) | |
407 | { | |
408 | /* can be changed during runtime */ | |
409 | switch (reg) { | |
410 | case RG_TRX_STATUS: | |
411 | case RG_TRX_STATE: | |
412 | case RG_PHY_RSSI: | |
413 | case RG_PHY_ED_LEVEL: | |
414 | case RG_IRQ_STATUS: | |
415 | case RG_VREG_CTRL: | |
416 | return true; | |
417 | default: | |
418 | return false; | |
419 | } | |
420 | } | |
421 | ||
422 | static bool | |
423 | at86rf230_reg_precious(struct device *dev, unsigned int reg) | |
424 | { | |
425 | /* don't clear irq line on read */ | |
426 | switch (reg) { | |
427 | case RG_IRQ_STATUS: | |
428 | return true; | |
429 | default: | |
430 | return false; | |
431 | } | |
432 | } | |
433 | ||
434 | static struct regmap_config at86rf230_regmap_spi_config = { | |
435 | .reg_bits = 8, | |
436 | .val_bits = 8, | |
437 | .write_flag_mask = CMD_REG | CMD_WRITE, | |
438 | .read_flag_mask = CMD_REG, | |
439 | .cache_type = REGCACHE_RBTREE, | |
440 | .max_register = AT86RF2XX_NUMREGS, | |
441 | .writeable_reg = at86rf230_reg_writeable, | |
442 | .readable_reg = at86rf230_reg_readable, | |
443 | .volatile_reg = at86rf230_reg_volatile, | |
444 | .precious_reg = at86rf230_reg_precious, | |
445 | }; | |
446 | ||
1d15d6b5 AA |
447 | static void |
448 | at86rf230_async_error_recover(void *context) | |
449 | { | |
450 | struct at86rf230_state_change *ctx = context; | |
451 | struct at86rf230_local *lp = ctx->lp; | |
452 | ||
97fed795 | 453 | at86rf230_async_state_change(lp, ctx, STATE_RX_AACK_ON, NULL, false); |
955aee8b | 454 | ieee802154_wake_queue(lp->hw); |
1d15d6b5 AA |
455 | } |
456 | ||
457 | static void | |
458 | at86rf230_async_error(struct at86rf230_local *lp, | |
459 | struct at86rf230_state_change *ctx, int rc) | |
460 | { | |
461 | dev_err(&lp->spi->dev, "spi_async error %d\n", rc); | |
462 | ||
463 | at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF, | |
97fed795 | 464 | at86rf230_async_error_recover, false); |
1d15d6b5 AA |
465 | } |
466 | ||
467 | /* Generic function to get some register value in async mode */ | |
97fed795 | 468 | static void |
1d15d6b5 AA |
469 | at86rf230_async_read_reg(struct at86rf230_local *lp, const u8 reg, |
470 | struct at86rf230_state_change *ctx, | |
97fed795 AA |
471 | void (*complete)(void *context), |
472 | const bool irq_enable) | |
7b8e19b6 | 473 | { |
97fed795 AA |
474 | int rc; |
475 | ||
1d15d6b5 AA |
476 | u8 *tx_buf = ctx->buf; |
477 | ||
478 | tx_buf[0] = (reg & CMD_REG_MASK) | CMD_REG; | |
479 | ctx->trx.len = 2; | |
480 | ctx->msg.complete = complete; | |
97fed795 AA |
481 | ctx->irq_enable = irq_enable; |
482 | rc = spi_async(lp->spi, &ctx->msg); | |
483 | if (rc) { | |
484 | if (irq_enable) | |
485 | enable_irq(lp->spi->irq); | |
486 | ||
487 | at86rf230_async_error(lp, ctx, rc); | |
488 | } | |
1d15d6b5 AA |
489 | } |
490 | ||
491 | static void | |
492 | at86rf230_async_state_assert(void *context) | |
493 | { | |
494 | struct at86rf230_state_change *ctx = context; | |
495 | struct at86rf230_local *lp = ctx->lp; | |
496 | const u8 *buf = ctx->buf; | |
497 | const u8 trx_state = buf[1] & 0x1f; | |
498 | ||
499 | /* Assert state change */ | |
500 | if (trx_state != ctx->to_state) { | |
501 | /* Special handling if transceiver state is in | |
502 | * STATE_BUSY_RX_AACK and a SHR was detected. | |
503 | */ | |
504 | if (trx_state == STATE_BUSY_RX_AACK) { | |
505 | /* Undocumented race condition. If we send a state | |
506 | * change to STATE_RX_AACK_ON the transceiver could | |
507 | * change his state automatically to STATE_BUSY_RX_AACK | |
508 | * if a SHR was detected. This is not an error, but we | |
509 | * can't assert this. | |
510 | */ | |
511 | if (ctx->to_state == STATE_RX_AACK_ON) | |
512 | goto done; | |
513 | ||
514 | /* If we change to STATE_TX_ON without forcing and | |
515 | * transceiver state is STATE_BUSY_RX_AACK, we wait | |
516 | * 'tFrame + tPAck' receiving time. In this time the | |
517 | * PDU should be received. If the transceiver is still | |
518 | * in STATE_BUSY_RX_AACK, we run a force state change | |
519 | * to STATE_TX_ON. This is a timeout handling, if the | |
520 | * transceiver stucks in STATE_BUSY_RX_AACK. | |
521 | */ | |
522 | if (ctx->to_state == STATE_TX_ON) { | |
523 | at86rf230_async_state_change(lp, ctx, | |
524 | STATE_FORCE_TX_ON, | |
97fed795 AA |
525 | ctx->complete, |
526 | ctx->irq_enable); | |
1d15d6b5 AA |
527 | return; |
528 | } | |
529 | } | |
530 | ||
531 | ||
532 | dev_warn(&lp->spi->dev, "unexcept state change from 0x%02x to 0x%02x. Actual state: 0x%02x\n", | |
533 | ctx->from_state, ctx->to_state, trx_state); | |
534 | } | |
535 | ||
536 | done: | |
537 | if (ctx->complete) | |
538 | ctx->complete(context); | |
539 | } | |
540 | ||
541 | /* Do state change timing delay. */ | |
542 | static void | |
543 | at86rf230_async_state_delay(void *context) | |
544 | { | |
545 | struct at86rf230_state_change *ctx = context; | |
546 | struct at86rf230_local *lp = ctx->lp; | |
547 | struct at86rf2xx_chip_data *c = lp->data; | |
548 | bool force = false; | |
1d15d6b5 AA |
549 | |
550 | /* The force state changes are will show as normal states in the | |
551 | * state status subregister. We change the to_state to the | |
552 | * corresponding one and remember if it was a force change, this | |
553 | * differs if we do a state change from STATE_BUSY_RX_AACK. | |
554 | */ | |
555 | switch (ctx->to_state) { | |
556 | case STATE_FORCE_TX_ON: | |
557 | ctx->to_state = STATE_TX_ON; | |
558 | force = true; | |
559 | break; | |
560 | case STATE_FORCE_TRX_OFF: | |
561 | ctx->to_state = STATE_TRX_OFF; | |
562 | force = true; | |
563 | break; | |
564 | default: | |
565 | break; | |
566 | } | |
567 | ||
568 | switch (ctx->from_state) { | |
2e0571c0 AA |
569 | case STATE_TRX_OFF: |
570 | switch (ctx->to_state) { | |
571 | case STATE_RX_AACK_ON: | |
572 | usleep_range(c->t_off_to_aack, c->t_off_to_aack + 10); | |
573 | goto change; | |
574 | case STATE_TX_ON: | |
575 | usleep_range(c->t_off_to_tx_on, | |
576 | c->t_off_to_tx_on + 10); | |
577 | goto change; | |
578 | default: | |
579 | break; | |
580 | } | |
581 | break; | |
1d15d6b5 AA |
582 | case STATE_BUSY_RX_AACK: |
583 | switch (ctx->to_state) { | |
584 | case STATE_TX_ON: | |
585 | /* Wait for worst case receiving time if we | |
586 | * didn't make a force change from BUSY_RX_AACK | |
587 | * to TX_ON. | |
588 | */ | |
589 | if (!force) { | |
590 | usleep_range(c->t_frame + c->t_p_ack, | |
591 | c->t_frame + c->t_p_ack + 1000); | |
592 | goto change; | |
593 | } | |
594 | break; | |
595 | default: | |
596 | break; | |
597 | } | |
598 | break; | |
09e536cd AA |
599 | /* Default value, means RESET state */ |
600 | case STATE_P_ON: | |
601 | switch (ctx->to_state) { | |
602 | case STATE_TRX_OFF: | |
603 | usleep_range(c->t_reset_to_off, c->t_reset_to_off + 10); | |
604 | goto change; | |
605 | default: | |
606 | break; | |
607 | } | |
608 | break; | |
1d15d6b5 AA |
609 | default: |
610 | break; | |
611 | } | |
612 | ||
613 | /* Default delay is 1us in the most cases */ | |
614 | udelay(1); | |
615 | ||
616 | change: | |
97fed795 AA |
617 | at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx, |
618 | at86rf230_async_state_assert, | |
619 | ctx->irq_enable); | |
1d15d6b5 AA |
620 | } |
621 | ||
622 | static void | |
623 | at86rf230_async_state_change_start(void *context) | |
624 | { | |
625 | struct at86rf230_state_change *ctx = context; | |
626 | struct at86rf230_local *lp = ctx->lp; | |
627 | u8 *buf = ctx->buf; | |
628 | const u8 trx_state = buf[1] & 0x1f; | |
629 | int rc; | |
630 | ||
631 | /* Check for "possible" STATE_TRANSITION_IN_PROGRESS */ | |
632 | if (trx_state == STATE_TRANSITION_IN_PROGRESS) { | |
633 | udelay(1); | |
97fed795 AA |
634 | at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx, |
635 | at86rf230_async_state_change_start, | |
636 | ctx->irq_enable); | |
1d15d6b5 AA |
637 | return; |
638 | } | |
639 | ||
640 | /* Check if we already are in the state which we change in */ | |
641 | if (trx_state == ctx->to_state) { | |
642 | if (ctx->complete) | |
643 | ctx->complete(context); | |
644 | return; | |
645 | } | |
646 | ||
647 | /* Set current state to the context of state change */ | |
648 | ctx->from_state = trx_state; | |
649 | ||
650 | /* Going into the next step for a state change which do a timing | |
651 | * relevant delay. | |
652 | */ | |
653 | buf[0] = (RG_TRX_STATE & CMD_REG_MASK) | CMD_REG | CMD_WRITE; | |
654 | buf[1] = ctx->to_state; | |
655 | ctx->trx.len = 2; | |
656 | ctx->msg.complete = at86rf230_async_state_delay; | |
657 | rc = spi_async(lp->spi, &ctx->msg); | |
97fed795 AA |
658 | if (rc) { |
659 | if (ctx->irq_enable) | |
660 | enable_irq(lp->spi->irq); | |
661 | ||
662 | at86rf230_async_error(lp, &lp->state, rc); | |
97fed795 | 663 | } |
7b8e19b6 | 664 | } |
665 | ||
97fed795 | 666 | static void |
1d15d6b5 AA |
667 | at86rf230_async_state_change(struct at86rf230_local *lp, |
668 | struct at86rf230_state_change *ctx, | |
97fed795 AA |
669 | const u8 state, void (*complete)(void *context), |
670 | const bool irq_enable) | |
7b8e19b6 | 671 | { |
1d15d6b5 AA |
672 | /* Initialization for the state change context */ |
673 | ctx->to_state = state; | |
674 | ctx->complete = complete; | |
97fed795 AA |
675 | ctx->irq_enable = irq_enable; |
676 | at86rf230_async_read_reg(lp, RG_TRX_STATUS, ctx, | |
677 | at86rf230_async_state_change_start, | |
678 | irq_enable); | |
1d15d6b5 | 679 | } |
7b8e19b6 | 680 | |
2e0571c0 AA |
681 | static void |
682 | at86rf230_sync_state_change_complete(void *context) | |
683 | { | |
684 | struct at86rf230_state_change *ctx = context; | |
685 | struct at86rf230_local *lp = ctx->lp; | |
686 | ||
687 | complete(&lp->state_complete); | |
688 | } | |
689 | ||
690 | /* This function do a sync framework above the async state change. | |
691 | * Some callbacks of the IEEE 802.15.4 driver interface need to be | |
692 | * handled synchronously. | |
693 | */ | |
694 | static int | |
695 | at86rf230_sync_state_change(struct at86rf230_local *lp, unsigned int state) | |
696 | { | |
697 | int rc; | |
698 | ||
97fed795 AA |
699 | at86rf230_async_state_change(lp, &lp->state, state, |
700 | at86rf230_sync_state_change_complete, | |
701 | false); | |
2e0571c0 AA |
702 | |
703 | rc = wait_for_completion_timeout(&lp->state_complete, | |
704 | msecs_to_jiffies(100)); | |
d06c2199 AA |
705 | if (!rc) { |
706 | at86rf230_async_error(lp, &lp->state, -ETIMEDOUT); | |
2e0571c0 | 707 | return -ETIMEDOUT; |
d06c2199 | 708 | } |
2e0571c0 AA |
709 | |
710 | return 0; | |
711 | } | |
712 | ||
1d15d6b5 AA |
713 | static void |
714 | at86rf230_tx_complete(void *context) | |
715 | { | |
716 | struct at86rf230_state_change *ctx = context; | |
717 | struct at86rf230_local *lp = ctx->lp; | |
955aee8b | 718 | struct sk_buff *skb = lp->tx_skb; |
1d15d6b5 | 719 | |
35e92a8e | 720 | enable_irq(lp->spi->irq); |
955aee8b AA |
721 | |
722 | if (lp->max_frame_retries <= 0) { | |
723 | /* Interfame spacing time, which is phy depend. | |
724 | * TODO | |
725 | * Move this handling in MAC 802.15.4 layer. | |
726 | * This is currently a workaround to avoid fragmenation issues. | |
727 | */ | |
728 | if (skb->len > 18) | |
729 | udelay(lp->data->t_lifs); | |
730 | else | |
731 | udelay(lp->data->t_sifs); | |
732 | } | |
733 | ||
734 | ieee802154_xmit_complete(lp->hw, skb); | |
1d15d6b5 AA |
735 | } |
736 | ||
737 | static void | |
738 | at86rf230_tx_on(void *context) | |
739 | { | |
740 | struct at86rf230_state_change *ctx = context; | |
741 | struct at86rf230_local *lp = ctx->lp; | |
1d15d6b5 | 742 | |
97fed795 AA |
743 | at86rf230_async_state_change(lp, &lp->irq, STATE_RX_AACK_ON, |
744 | at86rf230_tx_complete, true); | |
1d15d6b5 AA |
745 | } |
746 | ||
747 | static void | |
748 | at86rf230_tx_trac_error(void *context) | |
749 | { | |
750 | struct at86rf230_state_change *ctx = context; | |
751 | struct at86rf230_local *lp = ctx->lp; | |
1d15d6b5 | 752 | |
97fed795 AA |
753 | at86rf230_async_state_change(lp, ctx, STATE_TX_ON, |
754 | at86rf230_tx_on, true); | |
1d15d6b5 AA |
755 | } |
756 | ||
757 | static void | |
758 | at86rf230_tx_trac_check(void *context) | |
759 | { | |
760 | struct at86rf230_state_change *ctx = context; | |
761 | struct at86rf230_local *lp = ctx->lp; | |
762 | const u8 *buf = ctx->buf; | |
763 | const u8 trac = (buf[1] & 0xe0) >> 5; | |
1d15d6b5 AA |
764 | |
765 | /* If trac status is different than zero we need to do a state change | |
766 | * to STATE_FORCE_TRX_OFF then STATE_TX_ON to recover the transceiver | |
767 | * state to TX_ON. | |
768 | */ | |
769 | if (trac) { | |
97fed795 AA |
770 | at86rf230_async_state_change(lp, ctx, STATE_FORCE_TRX_OFF, |
771 | at86rf230_tx_trac_error, true); | |
1d15d6b5 AA |
772 | return; |
773 | } | |
774 | ||
775 | at86rf230_tx_on(context); | |
776 | } | |
777 | ||
778 | ||
779 | static void | |
780 | at86rf230_tx_trac_status(void *context) | |
781 | { | |
782 | struct at86rf230_state_change *ctx = context; | |
783 | struct at86rf230_local *lp = ctx->lp; | |
1d15d6b5 | 784 | |
97fed795 AA |
785 | at86rf230_async_read_reg(lp, RG_TRX_STATE, ctx, |
786 | at86rf230_tx_trac_check, true); | |
1d15d6b5 AA |
787 | } |
788 | ||
789 | static void | |
790 | at86rf230_rx(struct at86rf230_local *lp, | |
b89c3341 | 791 | const u8 *data, const u8 len, const u8 lqi) |
1d15d6b5 | 792 | { |
1d15d6b5 AA |
793 | struct sk_buff *skb; |
794 | u8 rx_local_buf[AT86RF2XX_MAX_BUF]; | |
795 | ||
1d15d6b5 AA |
796 | memcpy(rx_local_buf, data, len); |
797 | enable_irq(lp->spi->irq); | |
798 | ||
61a22814 | 799 | skb = dev_alloc_skb(IEEE802154_MTU); |
1d15d6b5 AA |
800 | if (!skb) { |
801 | dev_vdbg(&lp->spi->dev, "failed to allocate sk_buff\n"); | |
802 | return; | |
803 | } | |
804 | ||
805 | memcpy(skb_put(skb, len), rx_local_buf, len); | |
b89c3341 | 806 | ieee802154_rx_irqsafe(lp->hw, skb, lqi); |
1d15d6b5 | 807 | } |
7b8e19b6 | 808 | |
1d15d6b5 AA |
809 | static void |
810 | at86rf230_rx_read_frame_complete(void *context) | |
811 | { | |
812 | struct at86rf230_state_change *ctx = context; | |
813 | struct at86rf230_local *lp = ctx->lp; | |
814 | const u8 *buf = lp->irq.buf; | |
d0e73c47 AA |
815 | u8 len = buf[1]; |
816 | ||
817 | if (!ieee802154_is_valid_psdu_len(len)) { | |
818 | dev_vdbg(&lp->spi->dev, "corrupted frame received\n"); | |
819 | len = IEEE802154_MTU; | |
820 | } | |
7b8e19b6 | 821 | |
2ac0f3a3 | 822 | at86rf230_rx(lp, buf + 2, len, buf[2 + len]); |
1d15d6b5 AA |
823 | } |
824 | ||
97fed795 | 825 | static void |
1d15d6b5 AA |
826 | at86rf230_rx_read_frame(struct at86rf230_local *lp) |
827 | { | |
97fed795 AA |
828 | int rc; |
829 | ||
1d15d6b5 | 830 | u8 *buf = lp->irq.buf; |
7b8e19b6 | 831 | |
832 | buf[0] = CMD_FB; | |
1d15d6b5 AA |
833 | lp->irq.trx.len = AT86RF2XX_MAX_BUF; |
834 | lp->irq.msg.complete = at86rf230_rx_read_frame_complete; | |
97fed795 AA |
835 | rc = spi_async(lp->spi, &lp->irq.msg); |
836 | if (rc) { | |
837 | enable_irq(lp->spi->irq); | |
838 | at86rf230_async_error(lp, &lp->irq, rc); | |
839 | } | |
1d15d6b5 AA |
840 | } |
841 | ||
842 | static void | |
843 | at86rf230_rx_trac_check(void *context) | |
844 | { | |
845 | struct at86rf230_state_change *ctx = context; | |
846 | struct at86rf230_local *lp = ctx->lp; | |
1d15d6b5 AA |
847 | |
848 | /* Possible check on trac status here. This could be useful to make | |
849 | * some stats why receive is failed. Not used at the moment, but it's | |
850 | * maybe timing relevant. Datasheet doesn't say anything about this. | |
851 | * The programming guide say do it so. | |
852 | */ | |
853 | ||
97fed795 | 854 | at86rf230_rx_read_frame(lp); |
1d15d6b5 AA |
855 | } |
856 | ||
97fed795 | 857 | static void |
1d15d6b5 AA |
858 | at86rf230_irq_trx_end(struct at86rf230_local *lp) |
859 | { | |
860 | spin_lock(&lp->lock); | |
861 | if (lp->is_tx) { | |
862 | lp->is_tx = 0; | |
863 | spin_unlock(&lp->lock); | |
1d15d6b5 AA |
864 | |
865 | if (lp->tx_aret) | |
97fed795 AA |
866 | at86rf230_async_state_change(lp, &lp->irq, |
867 | STATE_FORCE_TX_ON, | |
868 | at86rf230_tx_trac_status, | |
869 | true); | |
1d15d6b5 | 870 | else |
97fed795 AA |
871 | at86rf230_async_state_change(lp, &lp->irq, |
872 | STATE_RX_AACK_ON, | |
873 | at86rf230_tx_complete, | |
874 | true); | |
1d15d6b5 AA |
875 | } else { |
876 | spin_unlock(&lp->lock); | |
97fed795 AA |
877 | at86rf230_async_read_reg(lp, RG_TRX_STATE, &lp->irq, |
878 | at86rf230_rx_trac_check, true); | |
1d15d6b5 AA |
879 | } |
880 | } | |
881 | ||
882 | static void | |
883 | at86rf230_irq_status(void *context) | |
884 | { | |
885 | struct at86rf230_state_change *ctx = context; | |
886 | struct at86rf230_local *lp = ctx->lp; | |
887 | const u8 *buf = lp->irq.buf; | |
888 | const u8 irq = buf[1]; | |
1d15d6b5 AA |
889 | |
890 | if (irq & IRQ_TRX_END) { | |
97fed795 | 891 | at86rf230_irq_trx_end(lp); |
1d15d6b5 AA |
892 | } else { |
893 | enable_irq(lp->spi->irq); | |
894 | dev_err(&lp->spi->dev, "not supported irq %02x received\n", | |
895 | irq); | |
896 | } | |
897 | } | |
898 | ||
899 | static irqreturn_t at86rf230_isr(int irq, void *data) | |
900 | { | |
901 | struct at86rf230_local *lp = data; | |
902 | struct at86rf230_state_change *ctx = &lp->irq; | |
903 | u8 *buf = ctx->buf; | |
904 | int rc; | |
905 | ||
90566363 | 906 | disable_irq_nosync(irq); |
1d15d6b5 AA |
907 | |
908 | buf[0] = (RG_IRQ_STATUS & CMD_REG_MASK) | CMD_REG; | |
909 | ctx->trx.len = 2; | |
910 | ctx->msg.complete = at86rf230_irq_status; | |
911 | rc = spi_async(lp->spi, &ctx->msg); | |
912 | if (rc) { | |
e9310211 | 913 | enable_irq(irq); |
1d15d6b5 AA |
914 | at86rf230_async_error(lp, ctx, rc); |
915 | return IRQ_NONE; | |
916 | } | |
917 | ||
918 | return IRQ_HANDLED; | |
919 | } | |
920 | ||
921 | static void | |
922 | at86rf230_write_frame_complete(void *context) | |
923 | { | |
924 | struct at86rf230_state_change *ctx = context; | |
925 | struct at86rf230_local *lp = ctx->lp; | |
926 | u8 *buf = ctx->buf; | |
927 | int rc; | |
928 | ||
929 | buf[0] = (RG_TRX_STATE & CMD_REG_MASK) | CMD_REG | CMD_WRITE; | |
930 | buf[1] = STATE_BUSY_TX; | |
931 | ctx->trx.len = 2; | |
932 | ctx->msg.complete = NULL; | |
933 | rc = spi_async(lp->spi, &ctx->msg); | |
934 | if (rc) | |
935 | at86rf230_async_error(lp, ctx, rc); | |
936 | } | |
937 | ||
938 | static void | |
939 | at86rf230_write_frame(void *context) | |
940 | { | |
941 | struct at86rf230_state_change *ctx = context; | |
942 | struct at86rf230_local *lp = ctx->lp; | |
943 | struct sk_buff *skb = lp->tx_skb; | |
944 | u8 *buf = lp->tx.buf; | |
945 | int rc; | |
946 | ||
947 | spin_lock(&lp->lock); | |
948 | lp->is_tx = 1; | |
949 | spin_unlock(&lp->lock); | |
950 | ||
951 | buf[0] = CMD_FB | CMD_WRITE; | |
952 | buf[1] = skb->len + 2; | |
953 | memcpy(buf + 2, skb->data, skb->len); | |
954 | lp->tx.trx.len = skb->len + 2; | |
955 | lp->tx.msg.complete = at86rf230_write_frame_complete; | |
956 | rc = spi_async(lp->spi, &lp->tx.msg); | |
957 | if (rc) | |
958 | at86rf230_async_error(lp, ctx, rc); | |
959 | } | |
960 | ||
961 | static void | |
962 | at86rf230_xmit_tx_on(void *context) | |
963 | { | |
964 | struct at86rf230_state_change *ctx = context; | |
965 | struct at86rf230_local *lp = ctx->lp; | |
7b8e19b6 | 966 | |
97fed795 AA |
967 | at86rf230_async_state_change(lp, ctx, STATE_TX_ARET_ON, |
968 | at86rf230_write_frame, false); | |
1d15d6b5 AA |
969 | } |
970 | ||
971 | static int | |
5a504397 | 972 | at86rf230_xmit(struct ieee802154_hw *hw, struct sk_buff *skb) |
1d15d6b5 | 973 | { |
5a504397 | 974 | struct at86rf230_local *lp = hw->priv; |
1d15d6b5 | 975 | struct at86rf230_state_change *ctx = &lp->tx; |
7b8e19b6 | 976 | |
1d15d6b5 | 977 | void (*tx_complete)(void *context) = at86rf230_write_frame; |
7b8e19b6 | 978 | |
1d15d6b5 | 979 | lp->tx_skb = skb; |
7b8e19b6 | 980 | |
1d15d6b5 AA |
981 | /* In ARET mode we need to go into STATE_TX_ARET_ON after we |
982 | * are in STATE_TX_ON. The pfad differs here, so we change | |
983 | * the complete handler. | |
984 | */ | |
985 | if (lp->tx_aret) | |
986 | tx_complete = at86rf230_xmit_tx_on; | |
7b8e19b6 | 987 | |
97fed795 AA |
988 | at86rf230_async_state_change(lp, ctx, STATE_TX_ON, tx_complete, false); |
989 | ||
1d15d6b5 | 990 | return 0; |
7b8e19b6 | 991 | } |
992 | ||
993 | static int | |
5a504397 | 994 | at86rf230_ed(struct ieee802154_hw *hw, u8 *level) |
7b8e19b6 | 995 | { |
7b8e19b6 | 996 | BUG_ON(!level); |
997 | *level = 0xbe; | |
998 | return 0; | |
999 | } | |
1000 | ||
7b8e19b6 | 1001 | static int |
5a504397 | 1002 | at86rf230_start(struct ieee802154_hw *hw) |
7b8e19b6 | 1003 | { |
5a504397 | 1004 | return at86rf230_sync_state_change(hw->priv, STATE_RX_AACK_ON); |
7b8e19b6 | 1005 | } |
1006 | ||
1007 | static void | |
5a504397 | 1008 | at86rf230_stop(struct ieee802154_hw *hw) |
7b8e19b6 | 1009 | { |
5a504397 | 1010 | at86rf230_sync_state_change(hw->priv, STATE_FORCE_TRX_OFF); |
7b8e19b6 | 1011 | } |
1012 | ||
8fad346f | 1013 | static int |
e37d2ec8 | 1014 | at86rf23x_set_channel(struct at86rf230_local *lp, u8 page, u8 channel) |
8fad346f PB |
1015 | { |
1016 | return at86rf230_write_subreg(lp, SR_CHANNEL, channel); | |
1017 | } | |
1018 | ||
1019 | static int | |
e37d2ec8 | 1020 | at86rf212_set_channel(struct at86rf230_local *lp, u8 page, u8 channel) |
8fad346f PB |
1021 | { |
1022 | int rc; | |
1023 | ||
1024 | if (channel == 0) | |
1025 | rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 0); | |
1026 | else | |
1027 | rc = at86rf230_write_subreg(lp, SR_SUB_MODE, 1); | |
1028 | if (rc < 0) | |
1029 | return rc; | |
1030 | ||
6ca00197 | 1031 | if (page == 0) { |
643e53c2 | 1032 | rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 0); |
a53d1f7c | 1033 | lp->data->rssi_base_val = -100; |
6ca00197 | 1034 | } else { |
643e53c2 | 1035 | rc = at86rf230_write_subreg(lp, SR_BPSK_QPSK, 1); |
a53d1f7c | 1036 | lp->data->rssi_base_val = -98; |
6ca00197 | 1037 | } |
643e53c2 PB |
1038 | if (rc < 0) |
1039 | return rc; | |
1040 | ||
8fad346f PB |
1041 | return at86rf230_write_subreg(lp, SR_CHANNEL, channel); |
1042 | } | |
1043 | ||
7b8e19b6 | 1044 | static int |
e37d2ec8 | 1045 | at86rf230_channel(struct ieee802154_hw *hw, u8 page, u8 channel) |
7b8e19b6 | 1046 | { |
5a504397 | 1047 | struct at86rf230_local *lp = hw->priv; |
7b8e19b6 | 1048 | int rc; |
1049 | ||
fe23bcd9 | 1050 | if (page > 31 || |
5a504397 | 1051 | !(lp->hw->phy->channels_supported[page] & BIT(channel))) { |
7b8e19b6 | 1052 | WARN_ON(1); |
1053 | return -EINVAL; | |
1054 | } | |
1055 | ||
a53d1f7c | 1056 | rc = lp->data->set_channel(lp, page, channel); |
8fad346f PB |
1057 | if (rc < 0) |
1058 | return rc; | |
1059 | ||
984e0c68 AA |
1060 | /* Wait for PLL */ |
1061 | usleep_range(lp->data->t_channel_switch, | |
1062 | lp->data->t_channel_switch + 10); | |
5a504397 AA |
1063 | hw->phy->current_channel = channel; |
1064 | hw->phy->current_page = page; | |
7b8e19b6 | 1065 | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1486774d | 1069 | static int |
5a504397 | 1070 | at86rf230_set_hw_addr_filt(struct ieee802154_hw *hw, |
1486774d | 1071 | struct ieee802154_hw_addr_filt *filt, |
1072 | unsigned long changed) | |
1073 | { | |
5a504397 | 1074 | struct at86rf230_local *lp = hw->priv; |
1486774d | 1075 | |
57205c14 | 1076 | if (changed & IEEE802154_AFILT_SADDR_CHANGED) { |
b70ab2e8 PB |
1077 | u16 addr = le16_to_cpu(filt->short_addr); |
1078 | ||
1486774d | 1079 | dev_vdbg(&lp->spi->dev, |
1080 | "at86rf230_set_hw_addr_filt called for saddr\n"); | |
b70ab2e8 PB |
1081 | __at86rf230_write(lp, RG_SHORT_ADDR_0, addr); |
1082 | __at86rf230_write(lp, RG_SHORT_ADDR_1, addr >> 8); | |
1486774d | 1083 | } |
1084 | ||
57205c14 | 1085 | if (changed & IEEE802154_AFILT_PANID_CHANGED) { |
b70ab2e8 PB |
1086 | u16 pan = le16_to_cpu(filt->pan_id); |
1087 | ||
1486774d | 1088 | dev_vdbg(&lp->spi->dev, |
1089 | "at86rf230_set_hw_addr_filt called for pan id\n"); | |
b70ab2e8 PB |
1090 | __at86rf230_write(lp, RG_PAN_ID_0, pan); |
1091 | __at86rf230_write(lp, RG_PAN_ID_1, pan >> 8); | |
1486774d | 1092 | } |
1093 | ||
57205c14 | 1094 | if (changed & IEEE802154_AFILT_IEEEADDR_CHANGED) { |
b70ab2e8 PB |
1095 | u8 i, addr[8]; |
1096 | ||
1097 | memcpy(addr, &filt->ieee_addr, 8); | |
1486774d | 1098 | dev_vdbg(&lp->spi->dev, |
1099 | "at86rf230_set_hw_addr_filt called for IEEE addr\n"); | |
b70ab2e8 PB |
1100 | for (i = 0; i < 8; i++) |
1101 | __at86rf230_write(lp, RG_IEEE_ADDR_0 + i, addr[i]); | |
1486774d | 1102 | } |
1103 | ||
57205c14 | 1104 | if (changed & IEEE802154_AFILT_PANC_CHANGED) { |
1486774d | 1105 | dev_vdbg(&lp->spi->dev, |
1106 | "at86rf230_set_hw_addr_filt called for panc change\n"); | |
1107 | if (filt->pan_coord) | |
1108 | at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 1); | |
1109 | else | |
1110 | at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 0); | |
1111 | } | |
1112 | ||
1113 | return 0; | |
1114 | } | |
1115 | ||
9b2777d6 | 1116 | static int |
5a504397 | 1117 | at86rf230_set_txpower(struct ieee802154_hw *hw, int db) |
9b2777d6 | 1118 | { |
5a504397 | 1119 | struct at86rf230_local *lp = hw->priv; |
9b2777d6 PB |
1120 | |
1121 | /* typical maximum output is 5dBm with RG_PHY_TX_PWR 0x60, lower five | |
1122 | * bits decrease power in 1dB steps. 0x60 represents extra PA gain of | |
1123 | * 0dB. | |
1124 | * thus, supported values for db range from -26 to 5, for 31dB of | |
1125 | * reduction to 0dB of reduction. | |
1126 | */ | |
1127 | if (db > 5 || db < -26) | |
1128 | return -EINVAL; | |
1129 | ||
1130 | db = -(db - 5); | |
1131 | ||
677676cd | 1132 | return __at86rf230_write(lp, RG_PHY_TX_PWR, 0x60 | db); |
9b2777d6 PB |
1133 | } |
1134 | ||
84dda3c6 | 1135 | static int |
5a504397 | 1136 | at86rf230_set_lbt(struct ieee802154_hw *hw, bool on) |
84dda3c6 | 1137 | { |
5a504397 | 1138 | struct at86rf230_local *lp = hw->priv; |
84dda3c6 PB |
1139 | |
1140 | return at86rf230_write_subreg(lp, SR_CSMA_LBT_MODE, on); | |
1141 | } | |
1142 | ||
ba08fea5 | 1143 | static int |
5a504397 | 1144 | at86rf230_set_cca_mode(struct ieee802154_hw *hw, u8 mode) |
ba08fea5 | 1145 | { |
5a504397 | 1146 | struct at86rf230_local *lp = hw->priv; |
ba08fea5 PB |
1147 | |
1148 | return at86rf230_write_subreg(lp, SR_CCA_MODE, mode); | |
1149 | } | |
1150 | ||
a7d7eda9 AA |
1151 | static int |
1152 | at86rf212_get_desens_steps(struct at86rf230_local *lp, s32 level) | |
1153 | { | |
1154 | return (level - lp->data->rssi_base_val) * 100 / 207; | |
1155 | } | |
1156 | ||
1157 | static int | |
1158 | at86rf23x_get_desens_steps(struct at86rf230_local *lp, s32 level) | |
1159 | { | |
1160 | return (level - lp->data->rssi_base_val) / 2; | |
1161 | } | |
1162 | ||
6ca00197 | 1163 | static int |
5a504397 | 1164 | at86rf230_set_cca_ed_level(struct ieee802154_hw *hw, s32 level) |
6ca00197 | 1165 | { |
5a504397 | 1166 | struct at86rf230_local *lp = hw->priv; |
6ca00197 | 1167 | |
a53d1f7c | 1168 | if (level < lp->data->rssi_base_val || level > 30) |
6ca00197 PB |
1169 | return -EINVAL; |
1170 | ||
a7d7eda9 AA |
1171 | return at86rf230_write_subreg(lp, SR_CCA_ED_THRES, |
1172 | lp->data->get_desense_steps(lp, level)); | |
6ca00197 PB |
1173 | } |
1174 | ||
f2fdd67c | 1175 | static int |
5a504397 | 1176 | at86rf230_set_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, |
f2fdd67c PB |
1177 | u8 retries) |
1178 | { | |
5a504397 | 1179 | struct at86rf230_local *lp = hw->priv; |
f2fdd67c PB |
1180 | int rc; |
1181 | ||
1182 | if (min_be > max_be || max_be > 8 || retries > 5) | |
1183 | return -EINVAL; | |
1184 | ||
1185 | rc = at86rf230_write_subreg(lp, SR_MIN_BE, min_be); | |
1186 | if (rc) | |
1187 | return rc; | |
1188 | ||
1189 | rc = at86rf230_write_subreg(lp, SR_MAX_BE, max_be); | |
1190 | if (rc) | |
1191 | return rc; | |
1192 | ||
39d7f320 | 1193 | return at86rf230_write_subreg(lp, SR_MAX_CSMA_RETRIES, retries); |
f2fdd67c PB |
1194 | } |
1195 | ||
1196 | static int | |
5a504397 | 1197 | at86rf230_set_frame_retries(struct ieee802154_hw *hw, s8 retries) |
f2fdd67c | 1198 | { |
5a504397 | 1199 | struct at86rf230_local *lp = hw->priv; |
f2fdd67c PB |
1200 | int rc = 0; |
1201 | ||
1202 | if (retries < -1 || retries > 15) | |
1203 | return -EINVAL; | |
1204 | ||
1205 | lp->tx_aret = retries >= 0; | |
850f43ac | 1206 | lp->max_frame_retries = retries; |
f2fdd67c PB |
1207 | |
1208 | if (retries >= 0) | |
1209 | rc = at86rf230_write_subreg(lp, SR_MAX_FRAME_RETRIES, retries); | |
1210 | ||
1211 | return rc; | |
1212 | } | |
1213 | ||
92f45f54 AA |
1214 | static int |
1215 | at86rf230_set_promiscuous_mode(struct ieee802154_hw *hw, const bool on) | |
1216 | { | |
1217 | struct at86rf230_local *lp = hw->priv; | |
1218 | int rc; | |
1219 | ||
1220 | if (on) { | |
1221 | rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 1); | |
1222 | if (rc < 0) | |
1223 | return rc; | |
1224 | ||
1225 | rc = at86rf230_write_subreg(lp, SR_AACK_PROM_MODE, 1); | |
1226 | if (rc < 0) | |
1227 | return rc; | |
1228 | } else { | |
1229 | rc = at86rf230_write_subreg(lp, SR_AACK_PROM_MODE, 0); | |
1230 | if (rc < 0) | |
1231 | return rc; | |
1232 | ||
1233 | rc = at86rf230_write_subreg(lp, SR_AACK_DIS_ACK, 0); | |
1234 | if (rc < 0) | |
1235 | return rc; | |
1236 | } | |
1237 | ||
1238 | return 0; | |
1239 | } | |
1240 | ||
16301861 | 1241 | static const struct ieee802154_ops at86rf230_ops = { |
7b8e19b6 | 1242 | .owner = THIS_MODULE, |
955aee8b | 1243 | .xmit_async = at86rf230_xmit, |
7b8e19b6 | 1244 | .ed = at86rf230_ed, |
1245 | .set_channel = at86rf230_channel, | |
1246 | .start = at86rf230_start, | |
1247 | .stop = at86rf230_stop, | |
1486774d | 1248 | .set_hw_addr_filt = at86rf230_set_hw_addr_filt, |
640985ec AA |
1249 | .set_txpower = at86rf230_set_txpower, |
1250 | .set_lbt = at86rf230_set_lbt, | |
1251 | .set_cca_mode = at86rf230_set_cca_mode, | |
1252 | .set_cca_ed_level = at86rf230_set_cca_ed_level, | |
1253 | .set_csma_params = at86rf230_set_csma_params, | |
1254 | .set_frame_retries = at86rf230_set_frame_retries, | |
92f45f54 | 1255 | .set_promiscuous_mode = at86rf230_set_promiscuous_mode, |
8fad346f PB |
1256 | }; |
1257 | ||
a53d1f7c | 1258 | static struct at86rf2xx_chip_data at86rf233_data = { |
7a4ef918 | 1259 | .t_sleep_cycle = 330, |
984e0c68 | 1260 | .t_channel_switch = 11, |
09e536cd | 1261 | .t_reset_to_off = 26, |
2e0571c0 AA |
1262 | .t_off_to_aack = 80, |
1263 | .t_off_to_tx_on = 80, | |
1d15d6b5 AA |
1264 | .t_frame = 4096, |
1265 | .t_p_ack = 545, | |
1266 | .t_sifs = 192, | |
7ad38b8f | 1267 | .t_lifs = 640, |
1d15d6b5 | 1268 | .t_tx_timeout = 2000, |
a53d1f7c AA |
1269 | .rssi_base_val = -91, |
1270 | .set_channel = at86rf23x_set_channel, | |
a7d7eda9 | 1271 | .get_desense_steps = at86rf23x_get_desens_steps |
a53d1f7c AA |
1272 | }; |
1273 | ||
1274 | static struct at86rf2xx_chip_data at86rf231_data = { | |
7a4ef918 | 1275 | .t_sleep_cycle = 330, |
984e0c68 | 1276 | .t_channel_switch = 24, |
09e536cd | 1277 | .t_reset_to_off = 37, |
2e0571c0 AA |
1278 | .t_off_to_aack = 110, |
1279 | .t_off_to_tx_on = 110, | |
1d15d6b5 AA |
1280 | .t_frame = 4096, |
1281 | .t_p_ack = 545, | |
1282 | .t_sifs = 192, | |
7ad38b8f | 1283 | .t_lifs = 640, |
1d15d6b5 | 1284 | .t_tx_timeout = 2000, |
a53d1f7c AA |
1285 | .rssi_base_val = -91, |
1286 | .set_channel = at86rf23x_set_channel, | |
a7d7eda9 | 1287 | .get_desense_steps = at86rf23x_get_desens_steps |
a53d1f7c AA |
1288 | }; |
1289 | ||
1290 | static struct at86rf2xx_chip_data at86rf212_data = { | |
7a4ef918 | 1291 | .t_sleep_cycle = 330, |
984e0c68 | 1292 | .t_channel_switch = 11, |
09e536cd | 1293 | .t_reset_to_off = 26, |
2e0571c0 AA |
1294 | .t_off_to_aack = 200, |
1295 | .t_off_to_tx_on = 200, | |
1d15d6b5 AA |
1296 | .t_frame = 4096, |
1297 | .t_p_ack = 545, | |
1298 | .t_sifs = 192, | |
7ad38b8f | 1299 | .t_lifs = 640, |
1d15d6b5 | 1300 | .t_tx_timeout = 2000, |
a53d1f7c AA |
1301 | .rssi_base_val = -100, |
1302 | .set_channel = at86rf212_set_channel, | |
a7d7eda9 | 1303 | .get_desense_steps = at86rf212_get_desens_steps |
a53d1f7c AA |
1304 | }; |
1305 | ||
7b8e19b6 | 1306 | static int at86rf230_hw_init(struct at86rf230_local *lp) |
1307 | { | |
1db0558e | 1308 | int rc, irq_type, irq_pol = IRQ_ACTIVE_HIGH; |
f76014f7 | 1309 | unsigned int dvdd; |
f2fdd67c | 1310 | u8 csma_seed[2]; |
7b8e19b6 | 1311 | |
09e536cd | 1312 | rc = at86rf230_sync_state_change(lp, STATE_FORCE_TRX_OFF); |
7dcbd22a PB |
1313 | if (rc) |
1314 | return rc; | |
7b8e19b6 | 1315 | |
4af619ae | 1316 | irq_type = irq_get_trigger_type(lp->spi->irq); |
1db0558e | 1317 | if (irq_type == IRQ_TYPE_EDGE_FALLING) |
43b5abe0 | 1318 | irq_pol = IRQ_ACTIVE_LOW; |
43b5abe0 | 1319 | |
18c65049 | 1320 | rc = at86rf230_write_subreg(lp, SR_IRQ_POLARITY, irq_pol); |
43b5abe0 SH |
1321 | if (rc) |
1322 | return rc; | |
1323 | ||
6bd2b132 AA |
1324 | rc = at86rf230_write_subreg(lp, SR_RX_SAFE_MODE, 1); |
1325 | if (rc) | |
1326 | return rc; | |
1327 | ||
057dad6f | 1328 | rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, IRQ_TRX_END); |
7b8e19b6 | 1329 | if (rc) |
1330 | return rc; | |
1331 | ||
f2fdd67c PB |
1332 | get_random_bytes(csma_seed, ARRAY_SIZE(csma_seed)); |
1333 | rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_0, csma_seed[0]); | |
1334 | if (rc) | |
1335 | return rc; | |
1336 | rc = at86rf230_write_subreg(lp, SR_CSMA_SEED_1, csma_seed[1]); | |
1337 | if (rc) | |
1338 | return rc; | |
1339 | ||
7b8e19b6 | 1340 | /* CLKM changes are applied immediately */ |
1341 | rc = at86rf230_write_subreg(lp, SR_CLKM_SHA_SEL, 0x00); | |
1342 | if (rc) | |
1343 | return rc; | |
1344 | ||
1345 | /* Turn CLKM Off */ | |
1346 | rc = at86rf230_write_subreg(lp, SR_CLKM_CTRL, 0x00); | |
1347 | if (rc) | |
1348 | return rc; | |
1349 | /* Wait the next SLEEP cycle */ | |
7a4ef918 AA |
1350 | usleep_range(lp->data->t_sleep_cycle, |
1351 | lp->data->t_sleep_cycle + 100); | |
7b8e19b6 | 1352 | |
1cc9fc53 | 1353 | rc = at86rf230_read_subreg(lp, SR_DVDD_OK, &dvdd); |
7b8e19b6 | 1354 | if (rc) |
1355 | return rc; | |
1cc9fc53 | 1356 | if (!dvdd) { |
7b8e19b6 | 1357 | dev_err(&lp->spi->dev, "DVDD error\n"); |
1358 | return -EINVAL; | |
1359 | } | |
1360 | ||
05e3f2f3 AA |
1361 | /* Force setting slotted operation bit to 0. Sometimes the atben |
1362 | * sets this bit and I don't know why. We set this always force | |
1363 | * to zero while probing. | |
1364 | */ | |
6cc6399c | 1365 | return at86rf230_write_subreg(lp, SR_SLOTTED_OPERATION, 0); |
7b8e19b6 | 1366 | } |
1367 | ||
fa2d3e94 AA |
1368 | static struct at86rf230_platform_data * |
1369 | at86rf230_get_pdata(struct spi_device *spi) | |
1370 | { | |
1371 | struct at86rf230_platform_data *pdata; | |
fa2d3e94 AA |
1372 | |
1373 | if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node) | |
1374 | return spi->dev.platform_data; | |
1375 | ||
1376 | pdata = devm_kzalloc(&spi->dev, sizeof(*pdata), GFP_KERNEL); | |
1377 | if (!pdata) | |
1378 | goto done; | |
1379 | ||
1380 | pdata->rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0); | |
1381 | pdata->slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0); | |
1382 | ||
fa2d3e94 AA |
1383 | spi->dev.platform_data = pdata; |
1384 | done: | |
1385 | return pdata; | |
1386 | } | |
1387 | ||
c8ee0f56 AA |
1388 | static int |
1389 | at86rf230_detect_device(struct at86rf230_local *lp) | |
1390 | { | |
1391 | unsigned int part, version, val; | |
1392 | u16 man_id = 0; | |
1393 | const char *chip; | |
1394 | int rc; | |
1395 | ||
1396 | rc = __at86rf230_read(lp, RG_MAN_ID_0, &val); | |
1397 | if (rc) | |
1398 | return rc; | |
1399 | man_id |= val; | |
1400 | ||
1401 | rc = __at86rf230_read(lp, RG_MAN_ID_1, &val); | |
1402 | if (rc) | |
1403 | return rc; | |
1404 | man_id |= (val << 8); | |
1405 | ||
1406 | rc = __at86rf230_read(lp, RG_PART_NUM, &part); | |
1407 | if (rc) | |
1408 | return rc; | |
1409 | ||
1410 | rc = __at86rf230_read(lp, RG_PART_NUM, &version); | |
1411 | if (rc) | |
1412 | return rc; | |
1413 | ||
1414 | if (man_id != 0x001f) { | |
1415 | dev_err(&lp->spi->dev, "Non-Atmel dev found (MAN_ID %02x %02x)\n", | |
1416 | man_id >> 8, man_id & 0xFF); | |
1417 | return -EINVAL; | |
1418 | } | |
1419 | ||
5a504397 | 1420 | lp->hw->extra_tx_headroom = 0; |
2ac0f3a3 | 1421 | lp->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AACK | |
c8fc84ed | 1422 | IEEE802154_HW_TXPOWER | IEEE802154_HW_ARET | |
92f45f54 | 1423 | IEEE802154_HW_AFILT | IEEE802154_HW_PROMISCUOUS; |
c8ee0f56 AA |
1424 | |
1425 | switch (part) { | |
1426 | case 2: | |
1427 | chip = "at86rf230"; | |
1428 | rc = -ENOTSUPP; | |
1429 | break; | |
1430 | case 3: | |
1431 | chip = "at86rf231"; | |
a53d1f7c | 1432 | lp->data = &at86rf231_data; |
5a504397 | 1433 | lp->hw->phy->channels_supported[0] = 0x7FFF800; |
fe58d016 | 1434 | lp->hw->phy->current_channel = 11; |
c8ee0f56 AA |
1435 | break; |
1436 | case 7: | |
1437 | chip = "at86rf212"; | |
1438 | if (version == 1) { | |
a53d1f7c | 1439 | lp->data = &at86rf212_data; |
5a504397 AA |
1440 | lp->hw->flags |= IEEE802154_HW_LBT; |
1441 | lp->hw->phy->channels_supported[0] = 0x00007FF; | |
1442 | lp->hw->phy->channels_supported[2] = 0x00007FF; | |
fe58d016 | 1443 | lp->hw->phy->current_channel = 5; |
c8ee0f56 AA |
1444 | } else { |
1445 | rc = -ENOTSUPP; | |
1446 | } | |
1447 | break; | |
1448 | case 11: | |
1449 | chip = "at86rf233"; | |
a53d1f7c | 1450 | lp->data = &at86rf233_data; |
5a504397 | 1451 | lp->hw->phy->channels_supported[0] = 0x7FFF800; |
fe58d016 | 1452 | lp->hw->phy->current_channel = 13; |
c8ee0f56 AA |
1453 | break; |
1454 | default: | |
1455 | chip = "unkown"; | |
1456 | rc = -ENOTSUPP; | |
1457 | break; | |
1458 | } | |
1459 | ||
1460 | dev_info(&lp->spi->dev, "Detected %s chip version %d\n", chip, version); | |
1461 | ||
1462 | return rc; | |
1463 | } | |
1464 | ||
1d15d6b5 AA |
1465 | static void |
1466 | at86rf230_setup_spi_messages(struct at86rf230_local *lp) | |
1467 | { | |
2e0571c0 AA |
1468 | lp->state.lp = lp; |
1469 | spi_message_init(&lp->state.msg); | |
1470 | lp->state.msg.context = &lp->state; | |
1471 | lp->state.trx.tx_buf = lp->state.buf; | |
1472 | lp->state.trx.rx_buf = lp->state.buf; | |
1473 | spi_message_add_tail(&lp->state.trx, &lp->state.msg); | |
1474 | ||
1d15d6b5 AA |
1475 | lp->irq.lp = lp; |
1476 | spi_message_init(&lp->irq.msg); | |
1477 | lp->irq.msg.context = &lp->irq; | |
1478 | lp->irq.trx.tx_buf = lp->irq.buf; | |
1479 | lp->irq.trx.rx_buf = lp->irq.buf; | |
1480 | spi_message_add_tail(&lp->irq.trx, &lp->irq.msg); | |
1481 | ||
1482 | lp->tx.lp = lp; | |
1483 | spi_message_init(&lp->tx.msg); | |
1484 | lp->tx.msg.context = &lp->tx; | |
1485 | lp->tx.trx.tx_buf = lp->tx.buf; | |
1486 | lp->tx.trx.rx_buf = lp->tx.buf; | |
1487 | spi_message_add_tail(&lp->tx.trx, &lp->tx.msg); | |
1488 | } | |
1489 | ||
bb1f4606 | 1490 | static int at86rf230_probe(struct spi_device *spi) |
7b8e19b6 | 1491 | { |
43b5abe0 | 1492 | struct at86rf230_platform_data *pdata; |
5a504397 | 1493 | struct ieee802154_hw *hw; |
7b8e19b6 | 1494 | struct at86rf230_local *lp; |
f76014f7 | 1495 | unsigned int status; |
4af619ae | 1496 | int rc, irq_type; |
7b8e19b6 | 1497 | |
1498 | if (!spi->irq) { | |
1499 | dev_err(&spi->dev, "no IRQ specified\n"); | |
1500 | return -EINVAL; | |
1501 | } | |
1502 | ||
fa2d3e94 | 1503 | pdata = at86rf230_get_pdata(spi); |
43b5abe0 SH |
1504 | if (!pdata) { |
1505 | dev_err(&spi->dev, "no platform_data\n"); | |
1506 | return -EINVAL; | |
1507 | } | |
1508 | ||
3fa27571 | 1509 | if (gpio_is_valid(pdata->rstn)) { |
0679e29b AA |
1510 | rc = devm_gpio_request_one(&spi->dev, pdata->rstn, |
1511 | GPIOF_OUT_INIT_HIGH, "rstn"); | |
3fa27571 AA |
1512 | if (rc) |
1513 | return rc; | |
1514 | } | |
7b8e19b6 | 1515 | |
8fad346f | 1516 | if (gpio_is_valid(pdata->slp_tr)) { |
0679e29b AA |
1517 | rc = devm_gpio_request_one(&spi->dev, pdata->slp_tr, |
1518 | GPIOF_OUT_INIT_LOW, "slp_tr"); | |
7b8e19b6 | 1519 | if (rc) |
0679e29b | 1520 | return rc; |
7b8e19b6 | 1521 | } |
1522 | ||
1523 | /* Reset */ | |
3fa27571 AA |
1524 | if (gpio_is_valid(pdata->rstn)) { |
1525 | udelay(1); | |
1526 | gpio_set_value(pdata->rstn, 0); | |
1527 | udelay(1); | |
1528 | gpio_set_value(pdata->rstn, 1); | |
1529 | usleep_range(120, 240); | |
1530 | } | |
7b8e19b6 | 1531 | |
5a504397 AA |
1532 | hw = ieee802154_alloc_hw(sizeof(*lp), &at86rf230_ops); |
1533 | if (!hw) | |
640985ec AA |
1534 | return -ENOMEM; |
1535 | ||
5a504397 AA |
1536 | lp = hw->priv; |
1537 | lp->hw = hw; | |
640985ec | 1538 | lp->spi = spi; |
5a504397 | 1539 | hw->parent = &spi->dev; |
7c118c1a | 1540 | hw->vif_data_size = sizeof(*lp); |
f6f4e86a | 1541 | ieee802154_random_extended_addr(&hw->phy->perm_extended_addr); |
8fad346f | 1542 | |
f76014f7 AA |
1543 | lp->regmap = devm_regmap_init_spi(spi, &at86rf230_regmap_spi_config); |
1544 | if (IS_ERR(lp->regmap)) { | |
1545 | rc = PTR_ERR(lp->regmap); | |
1546 | dev_err(&spi->dev, "Failed to allocate register map: %d\n", | |
1547 | rc); | |
1548 | goto free_dev; | |
1549 | } | |
1550 | ||
1d15d6b5 AA |
1551 | at86rf230_setup_spi_messages(lp); |
1552 | ||
c8ee0f56 AA |
1553 | rc = at86rf230_detect_device(lp); |
1554 | if (rc < 0) | |
1555 | goto free_dev; | |
1556 | ||
8fad346f | 1557 | spin_lock_init(&lp->lock); |
2e0571c0 | 1558 | init_completion(&lp->state_complete); |
8fad346f PB |
1559 | |
1560 | spi_set_drvdata(spi, lp); | |
1561 | ||
7b8e19b6 | 1562 | rc = at86rf230_hw_init(lp); |
1563 | if (rc) | |
1d15d6b5 | 1564 | goto free_dev; |
7b8e19b6 | 1565 | |
19626946 AA |
1566 | /* Read irq status register to reset irq line */ |
1567 | rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status); | |
7b8e19b6 | 1568 | if (rc) |
1d15d6b5 | 1569 | goto free_dev; |
7b8e19b6 | 1570 | |
1d15d6b5 AA |
1571 | irq_type = irq_get_trigger_type(spi->irq); |
1572 | if (!irq_type) | |
1573 | irq_type = IRQF_TRIGGER_RISING; | |
1574 | ||
1575 | rc = devm_request_irq(&spi->dev, spi->irq, at86rf230_isr, | |
1576 | IRQF_SHARED | irq_type, dev_name(&spi->dev), lp); | |
057dad6f | 1577 | if (rc) |
1d15d6b5 | 1578 | goto free_dev; |
057dad6f | 1579 | |
5a504397 | 1580 | rc = ieee802154_register_hw(lp->hw); |
7b8e19b6 | 1581 | if (rc) |
1d15d6b5 | 1582 | goto free_dev; |
7b8e19b6 | 1583 | |
1584 | return rc; | |
1585 | ||
640985ec | 1586 | free_dev: |
5a504397 | 1587 | ieee802154_free_hw(lp->hw); |
8fad346f | 1588 | |
7b8e19b6 | 1589 | return rc; |
1590 | } | |
1591 | ||
bb1f4606 | 1592 | static int at86rf230_remove(struct spi_device *spi) |
7b8e19b6 | 1593 | { |
1594 | struct at86rf230_local *lp = spi_get_drvdata(spi); | |
1595 | ||
17e84a92 AA |
1596 | /* mask all at86rf230 irq's */ |
1597 | at86rf230_write_subreg(lp, SR_IRQ_MASK, 0); | |
5a504397 AA |
1598 | ieee802154_unregister_hw(lp->hw); |
1599 | ieee802154_free_hw(lp->hw); | |
7b8e19b6 | 1600 | dev_dbg(&spi->dev, "unregistered at86rf230\n"); |
0679e29b | 1601 | |
7b8e19b6 | 1602 | return 0; |
1603 | } | |
1604 | ||
1086b4f6 | 1605 | static const struct of_device_id at86rf230_of_match[] = { |
fa2d3e94 AA |
1606 | { .compatible = "atmel,at86rf230", }, |
1607 | { .compatible = "atmel,at86rf231", }, | |
1608 | { .compatible = "atmel,at86rf233", }, | |
1609 | { .compatible = "atmel,at86rf212", }, | |
1610 | { }, | |
1611 | }; | |
835cb7d2 | 1612 | MODULE_DEVICE_TABLE(of, at86rf230_of_match); |
fa2d3e94 | 1613 | |
90b15520 AA |
1614 | static const struct spi_device_id at86rf230_device_id[] = { |
1615 | { .name = "at86rf230", }, | |
1616 | { .name = "at86rf231", }, | |
1617 | { .name = "at86rf233", }, | |
1618 | { .name = "at86rf212", }, | |
1619 | { }, | |
1620 | }; | |
1621 | MODULE_DEVICE_TABLE(spi, at86rf230_device_id); | |
1622 | ||
7b8e19b6 | 1623 | static struct spi_driver at86rf230_driver = { |
90b15520 | 1624 | .id_table = at86rf230_device_id, |
7b8e19b6 | 1625 | .driver = { |
fa2d3e94 | 1626 | .of_match_table = of_match_ptr(at86rf230_of_match), |
7b8e19b6 | 1627 | .name = "at86rf230", |
1628 | .owner = THIS_MODULE, | |
1629 | }, | |
1630 | .probe = at86rf230_probe, | |
bb1f4606 | 1631 | .remove = at86rf230_remove, |
7b8e19b6 | 1632 | }; |
1633 | ||
395a5738 | 1634 | module_spi_driver(at86rf230_driver); |
7b8e19b6 | 1635 | |
1636 | MODULE_DESCRIPTION("AT86RF230 Transceiver Driver"); | |
1637 | MODULE_LICENSE("GPL v2"); |